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1997-05-14
Method for determining effective porosity and tortuosity of porous media
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1996-09-30
Method of determining properties of underground coal formations
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1995-02-08
Method of and apparatus for marine seismic surveying
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1995-03-08
Method and apparatus for oil or gas well cleaning
EP0777791A4
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1999-05-06
Embankment wall construction and method and block construction for making the same
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1998-05-11
Photogrammetric method of tracing moving objects
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1991-11-27
Method for measurement of the gas and water content in oil
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1993-07-21
Method of determining earth elastic parameters in antistropic media
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1999-09-22
Method of explosives detection
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1995-04-05
Oil boom and method
DE3562402D1
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1988-06-01
Method for estimating porosity and/or permeability
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1992-08-12
Method of determining the porosity of an underground formation being drilled
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1989-11-01
Method and apparatus for determining the porosity of geological formations
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1995-12-06
Contact acoustic porosity sensor and method for determining continuous rock porosity using same
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1995-05-29
Method of determining permeability and porosity of coal deposits
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1994-04-06
Sub-surface detection and measurement
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1999-01-18
Method of obtaining polyacrylamide particles
KR0157225B1
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1998-11-16
Permeability brick and method of making the same
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1996-04-15
Method of drilling and sealing the shot-holes
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1998-10-14
Method of transporting coal
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1998-07-08
Method and system for determining the integrity of mechanical seals
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1999-01-13
Method of expolosives detection
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1994-09-05
Method of determining physicochemical parameters of hard and brown coal
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Apparatus and method for the construction of wells